Micro SD Card Issues
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Micro SD Card Issues

by baobrien on Fri Feb 12, 2010 11:41 pm

I have tried to add an SD card to my YBox2, but I didn't know where to get a free sample SD card socket, so I tried using a microSD to SD adapter by soldering directly to it. I used information from the propeller cookbook for SD card wiring. I used the FSRW library from the propeller object exchange. After fiddling with the test and sysdep objects to match my configuration, the test failed. Returned error -1, I suspect from microSD SPI compatibility issues or wiring problems. Can someone help?
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fsrw_ybox2.tar.bz2
My fsrw library, modified for ybox2
(50.87 KiB) Downloaded 302 times
If it's not broken, take it apart and fix it.
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Re: Micro SD Card Issues

by baobrien on Sat Feb 13, 2010 4:53 pm

Here are the images of my electronics:
Image
Image
Image
Image
Image
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Re: Micro SD Card Issues

by fat16lib on Sat Feb 13, 2010 5:32 pm

Micro SD cards are not required to support SPI. All micro SD SanDisk cards that I have tested do support SPI.

Soldering card adapters often fails. Guess they can't take heat. I assume you have no shorts between pins and the correct pins are used. It looks like you have used 1-7 which is correct.

If you had access to a Wave or GPS shield on an Arduino, you could check the micro SD card but if it is a SanDisk it likely supports SPI.
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Re: Micro SD Card Issues

by baobrien on Sat Feb 13, 2010 5:41 pm

It's a Samsung brand MicroSD. I'll take a look at the adaptor, but I tried ordering some free sample SD sockets from molex.
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Re: Micro SD Card Issues

by adafruit on Sun Feb 14, 2010 3:00 pm

did you check that the pins arent being used by anything already (like the ethernet chip)?
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Re: Micro SD Card Issues

by baobrien on Sun Feb 14, 2010 4:02 pm

Their the four directly under eeprom/prop plug access. It didn't look like they were taken, or show it in the schematic.
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Re: Micro SD Card Issues

by adafruit on Sun Feb 14, 2010 10:52 pm

might have to contact the library maker..we also suggest the parallax forums, they have one just for propeller, and theres a lot of prop junkies there :D
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Re: Micro SD Card Issues

by baobrien on Fri Feb 19, 2010 12:23 am

My Molex sample SD sockets came in, and after soldering one in, the SD works great.
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Re: Micro SD Card Issues

by adafruit on Sun Feb 21, 2010 11:45 pm

whew! whatcha storin' on them?
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Re: Micro SD Card Issues

by baobrien on Mon Feb 22, 2010 3:43 pm

I'm trying to use the libs from FemtoBasic to set up a menu boot loader. It sort of works so far. I've got to be careful to not select non-binary files, the first time that happened, it screwed up the bootloader, but I managed to reflash it before it became a problem.
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Re: Micro SD Card Issues

by nezb on Tue Jun 08, 2010 6:57 pm

Where on the website did you go to request the sample SD card sockets?
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Re: Micro SD Card Issues

by baobrien on Thu Jun 10, 2010 12:40 am

1. Find the socket you want to order
2. Fill out information at http://www.molex.com/molex/smp/amesamplereq?channel=Products&langPref=english
3. They don't seem to check company name
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